| /* |
| * Copyright (c) International Business Machines Corp., 2009 |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| * Author: Serge Hallyn <serue@us.ibm.com> |
| * |
| * Check ipcns+sb longevity |
| * |
| * Mount mqueue fs |
| * unshare |
| * In unshared process: |
| * Create "/mq1" with mq_open() |
| * Mount mqueuefs |
| * Check that /mq1 exists |
| * Create /dev/mqueue/mq2 through vfs (create(2)) |
| * Umount /dev/mqueue |
| * Remount /dev/mqueue |
| * Check that both /mq1 and /mq2 exist |
| |
| ***************************************************************************/ |
| |
| #ifndef _GNU_SOURCE |
| #define _GNU_SOURCE |
| #endif |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| #include <assert.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <errno.h> |
| #include "mqns.h" |
| |
| char *TCID = "posixmq_namespace_03"; |
| int TST_TOTAL = 1; |
| |
| int p1[2]; |
| int p2[2]; |
| |
| #define FNAM1 DEV_MQUEUE2 SLASH_MQ1 |
| #define FNAM2 DEV_MQUEUE2 SLASH_MQ2 |
| |
| int check_mqueue(void *vtest) |
| { |
| char buf[30]; |
| mqd_t mqd; |
| int rc; |
| struct stat statbuf; |
| |
| close(p1[1]); |
| close(p2[0]); |
| |
| if (read(p1[0], buf, 3) != 3) { /* go */ |
| perror("read failed"); |
| exit(1); |
| } |
| |
| mqd = ltp_syscall(__NR_mq_open, NOSLASH_MQ1, O_RDWR | O_CREAT | O_EXCL, |
| 0755, NULL); |
| if (mqd == -1) { |
| write(p2[1], "mqfail", 7); |
| exit(1); |
| } |
| |
| mq_close(mqd); |
| |
| rc = mount("mqueue", DEV_MQUEUE2, "mqueue", 0, NULL); |
| if (rc == -1) { |
| write(p2[1], "mount1", 7); |
| exit(1); |
| } |
| |
| rc = stat(FNAM1, &statbuf); |
| if (rc == -1) { |
| write(p2[1], "stat1", 6); |
| exit(1); |
| } |
| |
| rc = creat(FNAM2, 0755); |
| if (rc == -1) { |
| write(p2[1], "creat", 6); |
| exit(1); |
| } |
| |
| close(rc); |
| |
| rc = umount(DEV_MQUEUE2); |
| if (rc == -1) { |
| write(p2[1], "umount", 7); |
| exit(1); |
| } |
| |
| rc = mount("mqueue", DEV_MQUEUE2, "mqueue", 0, NULL); |
| if (rc == -1) { |
| write(p2[1], "mount2", 7); |
| exit(1); |
| } |
| |
| rc = stat(FNAM1, &statbuf); |
| if (rc == -1) { |
| write(p2[1], "stat2", 7); |
| exit(1); |
| } |
| |
| rc = stat(FNAM2, &statbuf); |
| if (rc == -1) { |
| write(p2[1], "stat3", 7); |
| exit(1); |
| } |
| |
| write(p2[1], "done", 5); |
| |
| exit(0); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int r; |
| char buf[30]; |
| int use_clone = T_UNSHARE; |
| |
| if (argc == 2 && strcmp(argv[1], "-clone") == 0) { |
| tst_resm(TINFO, "Testing posix mq namespaces through clone(2)"); |
| use_clone = T_CLONE; |
| } else |
| tst_resm(TINFO, |
| "Testing posix mq namespaces through unshare(2)"); |
| |
| if (pipe(p1) == -1 || pipe(p2) == -1) |
| tst_brkm(TBROK | TERRNO, NULL, "pipe failed"); |
| |
| /* fire off the test */ |
| r = do_clone_unshare_test(use_clone, CLONE_NEWIPC, check_mqueue, NULL); |
| if (r < 0) { |
| tst_brkm(TBROK | TERRNO, NULL, "failed clone/unshare"); |
| } |
| |
| tst_resm(TINFO, "Checking correct umount+remount of mqueuefs"); |
| |
| mkdir(DEV_MQUEUE2, 0755); |
| |
| close(p1[0]); |
| close(p2[1]); |
| write(p1[1], "go", 3); |
| |
| read(p2[0], buf, 7); |
| r = TFAIL; |
| if (!strcmp(buf, "mqfail")) { |
| tst_resm(TFAIL, "child process could not create mqueue"); |
| goto fail; |
| } else if (!strcmp(buf, "mount1")) { |
| tst_resm(TFAIL, "child process could not mount mqueue"); |
| goto fail; |
| } else if (!strcmp(buf, "stat1x")) { |
| tst_resm(TFAIL, "mq created by child is not in mqueuefs"); |
| goto fail; |
| } else if (!strcmp(buf, "creat")) { |
| tst_resm(TFAIL, "child couldn't creat mq through mqueuefs"); |
| goto fail; |
| } else if (!strcmp(buf, "umount")) { |
| tst_resm(TFAIL, "child couldn't umount mqueuefs"); |
| goto fail; |
| } else if (!strcmp(buf, "mount2")) { |
| tst_resm(TFAIL, "child couldn't remount mqueuefs"); |
| goto fail; |
| } else if (!strcmp(buf, "stat2")) { |
| tst_resm(TFAIL, |
| "mq_open()d file gone after remount of mqueuefs"); |
| goto fail; |
| } else if (!strcmp(buf, "stat3")) { |
| tst_resm(TFAIL, |
| "creat(2)'d file gone after remount of mqueuefs"); |
| goto fail; |
| } |
| |
| tst_resm(TPASS, "umount+remount of mqueuefs remounted the right fs"); |
| |
| r = 0; |
| fail: |
| umount(DEV_MQUEUE2); |
| rmdir(DEV_MQUEUE2); |
| tst_exit(); |
| } |